Possible hijacking: Frontier passenger triggers security scare after bomb and death threats

A level four alert on flight 2539 in Atlanta.

Frontier Airlines Will Use Pratt & Whitney's GTF Engines To Power 91 Airbus A321neos

Frontier Airlines will operate more aircraft powered by the GTF engine.
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Frontier Airlines passenger arrested after threatening to kill co-passenger

A Frontier Airlines passenger was accused and taken into custody after allegedly threatening to kill the passenger seated next to him.